|Back to article|
Hypoglycemia is a condition that occurs when your blood sugar (glucose) is too low.
Blood sugar below 70 mg/dL is considered low. Blood sugar at or below this level can harm you.
Insulin shock; Low blood sugar
Causes, incidence, and risk factors
Hypoglycemia occurs when:
Insulin is a hormone that reduces blood sugar. It is produced by the pancreas in response to increased glucose levels in the blood.
Low blood sugar is most commonly seen in people with diabetes who are taking insulin or other medicines to control their diabetes.
Babies who are born to mothers with diabetes may have severe drops in blood sugar.
Hypoglycemia in people who do not have diabetes may be caused by:
Symptoms you may have when your blood sugar gets too low include:
Sometimes your blood sugar may be too low, even if you do not have symptoms. If your blood sugar gets too low, you may:
Signs and tests
Home monitoring of blood sugar with a fingerstick sample will show readings lower than 70 mg/dL on your glucose monitor.
A blood glucose test in a blood sample taken from your veins will be low.
Treatment depends on the cause. People with diabetes will need to learn how to treat and prevent low blood sugar levels.
If hypoglycemia is caused by an insulinoma (insulin-releasing tumor), surgery to remove the tumor is the best treatment.
Severe hypoglycemia is a medical emergency that may cause seizures and permanent brain damage. Severe hypoglycemia in which you become unconscious is also called insulin shock.
Calling your health care provider
If signs of low blood sugar do not improve after you have eaten a snack that contains sugar:
DO NOT drive when your blood sugar is low.
Get medical help right away for a person with diabetes or low blood sugar who:
Cryer PE. Hypoglycemia. In: Melmed S, Polonsky KS, Larsen PR, Kronenberg HM, eds. Kronenberg: Williams Textbook of Endocrinology. 12th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 34.
Reviewed by:Shehzad Topiwala, MD, Chief Consultant Endocrinologist, Premier Medical Associates, The Villages, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorousstandards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information andservices. Learn more about A.D.A.M.'s editorialpolicy, editorialprocess, and privacypolicy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch.)
The information provided herein should not be used during any medical emergency or for the diagnosis or treatmentof any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions.Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 2014 A.D.A.M., Inc. Any duplication ordistribution of the information contained herein is strictly prohibited.